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author | Boaz Harrosh <bharrosh@panasas.com> | 2011-05-22 19:52:19 +0300 |
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committer | Boaz Harrosh <bharrosh@panasas.com> | 2011-05-29 20:54:15 +0300 |
commit | 04f83450388e87d86b387cf4a27b81eb7e69de7d (patch) | |
tree | 99c10d6a995ed1e7b872abb0127fc38d6bef9982 /fs/nfs/nfs4proc.c | |
parent | d20581aa4be11407c9eeeb75992df5ef176bba0f (diff) | |
download | op-kernel-dev-04f83450388e87d86b387cf4a27b81eb7e69de7d.zip op-kernel-dev-04f83450388e87d86b387cf4a27b81eb7e69de7d.tar.gz |
pnfs-obj: osd raid engine read/write implementation
With the use of the in-kernel osd library. Implement read/write
of data from/to osd-objects according to information specified
in the objects-layout.
Support for stripping over mirrors with a received stripe_unit.
There are however a few constrains which are not supported:
1. Stripe Unit must be a multiple of PAGE_SIZE
2. stripe length (stripe_unit * number_of_stripes) can not be
bigger then 32bit.
Also support raid-groups and partial-layout. Partial-layout is
when not all the groups are received on the line, addressing
only a partial range of the file.
TODO:
Only raid0! raid 4/5/6 support will come at later stage
A none supported layout will send IO through the MDS
[Important fallout from the last rebase]
Signed-off-by: Boaz Harrosh <bharrosh@panasas.com>
[gfp_flags]
Signed-off-by: Benny Halevy <bhalevy@panasas.com>
Diffstat (limited to 'fs/nfs/nfs4proc.c')
0 files changed, 0 insertions, 0 deletions